How can we help?

You can also find more resources in our Help Center.

43 terms

ch. 11 muscles and actions

on lab sheet
STUDY
PLAY
frontalis
draws scalp forward
occiptalis
draws scalp backwards
orbicularis oculi
closes eyes
orbicularis oris
closes lips
platysma
draws outer part of lower lilp down
masseter
elevates mandible
temporalis
elevates and retracts mandible
sternocleidomastoid
contracts/ flexes cervical part of vertebral column
digastric
elevates hyoid and base of tongue during swallowing
sternohyoid
depresses larynx, may flex skull
rectus abdominus
flexes vertebral column
external oblique
compresses abdomen
internal oblique
compresses abdomen
transverse abdominis
compresses abdomen
diaphragm
forms floor of thoracic cavity
external/ internal intercostals
draws adjacent ribs together
rectus abdominis
flexes vertebral column at lumbar/ compress abdomen
gluteus maximus
extends rotates thigh lterally
gluteus medius
adducts thigh medially
tensor faciae latae
flexes abducts
sartorius
...
rectus femoris
extends knee/ flexes thigh at hip
vastus lateralis
extends stablizer
vastus medialis
extends knee inferior fibers stablize patella
vastus intermedialis
extneds knee
graicilis
adducts thigh, helps in walking
gastrocnemius
flexes knee
soleus
planta flexion
hamstrings
extends knee/flexes thigh
biceps femoris
extneds thigh flexes knee
semitendinosus
extned thigh at hip flexes knee
semimembranosus
extends thigh and flexes knee
tibialis anterior
prime mover of dorsal flexion/ inverts foot
tibialis posterior
planta flexion, inverts foot
pectoralis major
flexes, adducts rotates arm
deltoid
priime mover of abduction
latissimus dorsi
extends/ adducts/ rotates arm
teres major
extends/ draws arm downwrd
teres minor
rotates arm laterally
bicep brachii
flexes/supinates forearm
brachialis
flexes forearm
brachiradialis
flexes forearm
tricepts brachii
extends forearm